<?php
echo !'0';
echo "\r\n";
echo !'1';
echo "\r\n";
echo strlen('1') > 0;
echo "\r\n";
echo "###";
$value;
echo 'value:'.isset($value);
echo "\r\n";
$value = 0;
echo 'value:'.isset($value);
echo "\r\n";

echo strlen(null);
echo "\r\n";
echo strlen(0);
echo "\r\n";
echo strlen("");
echo "\r\n";
echo "Finished";

